000 00317nam a2200133Ia 4500
008 210901s1968 xx 000 0 eng d
082 _a540 DUN
100 _aDunstan, Sonia
245 0 _aPrinciples of Chemistry
260 _aLondon
_bD.Van Norstrand
_c1968
300 _a493
650 _aChemistry
942 _2ddc
_cBK
999 _c7085
_d7085